A116174 Numbers k such that k concatenated with k+2 gives the product of two numbers which differ by 8.

1143, 4382, 4943, 24941511, 25058558, 94090583, 616729341438, 638432642423, 978717194478, 994009005983, 1636200161363007, 1710661666314798, 1805005185949007, 1906479843038783, 1986790648039982, 3072104679280383

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Comments

Also numbers k such that k concatenated with k+9 gives the product of two numbers which differ by 6.

Examples

			94090583//94090585 = 97000297 * 97000305, where // denotes concatenation.
94090583//94090592 = 97000298 * 97000304.
		

Crossrefs

Cf. A116168, A116173, A116175, A116181, A116305.

Cf. A116180, A116169, A116352.

Extensions

Edited by N. J. A. Sloane, Apr 13 2007